1 files changed, 149 insertions, 0 deletions
diff --git a/PyPDPServer/src/main/java/org/openecomp/policy/pypdp/notifications/NotificationController.java b/PyPDPServer/src/main/java/org/openecomp/policy/pypdp/notifications/NotificationController.java
new file mode 100644
index 000000000..0f2ed9b45
--- /dev/null
+++ b/PyPDPServer/src/main/java/org/openecomp/policy/pypdp/notifications/NotificationController.java
@@ -0,0 +1,149 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ECOMP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.policy.pypdp.notifications;
+
+import java.util.HashSet;
+import java.util.Iterator;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.openecomp.policy.api.LoadedPolicy;
+import org.openecomp.policy.api.NotificationHandler;
+import org.openecomp.policy.api.PDPNotification;
+import org.openecomp.policy.api.RemovedPolicy;
+import org.openecomp.policy.common.logging.eelf.MessageCodes;
+import org.openecomp.policy.common.logging.eelf.PolicyLogger;
+
+import org.openecomp.policy.xacml.api.XACMLErrorConstants;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectWriter;
+
+public class NotificationController implements NotificationHandler{
+	private static final Log logger	= LogFactory.getLog(NotificationController.class);
+	private static Notification record = new Notification();
+	//private static CountDownLatch latch;
+	
+	@Override
+	public void notificationReceived(PDPNotification notification) {
+		//latch = new CountDownLatch(1);
+		if(notification!=null){
+			// Take this into our Record holder for polling requests. 
+			NotificationServer.setUpdate(record(notification));
+			// Send the Update as is for AUTO clients. 
+			ObjectWriter ow = new ObjectMapper().writer();
+			try{
+				String json = ow.writeValueAsString(notification);
+				System.out.println("\n Notification: "+json);
+				logger.info(json);
+				NotificationServer.sendNotification(json);
+				//latch.await();
+			} catch (JsonProcessingException e) {
+				logger.error(XACMLErrorConstants.ERROR_SCHEMA_INVALID + e.getMessage());
+				// TODO:EELF Cleanup - Remove logger
+				PolicyLogger.error(MessageCodes.ERROR_SCHEMA_INVALID, e, "");
+			}
+			
+		}
+	}
+	
+	public static String record(PDPNotification notification) {
+		// Initialization with updates. 
+		if(record.getRemovedPolicies()== null){
+			record.setRemovedPolicies(notification.getRemovedPolicies());
+		}
+		if(record.getLoadedPolicies()== null){
+			record.setLoadedPolicies(notification.getLoadedPolicies());
+		}
+		// Check if there is anything new and update the record..
+		if(record.getLoadedPolicies()!= null || record.getRemovedPolicies()!=null) {
+			HashSet<RemovedPolicy> removedPolicies = (HashSet<RemovedPolicy>) record.getRemovedPolicies();
+			HashSet<LoadedPolicy> updatedPolicies = (HashSet<LoadedPolicy>) record.getLoadedPolicies();
+			// Checking with New updated policies.
+			if(notification.getLoadedPolicies()!= null && !notification.getLoadedPolicies().isEmpty()) {
+				for( LoadedPolicy newUpdatedPolicy : notification.getLoadedPolicies()) {
+					// If it was removed earlier then we need to remove from our record
+					Iterator<RemovedPolicy> oldRemovedPolicy = removedPolicies.iterator();
+					while(oldRemovedPolicy.hasNext()){
+						RemovedPolicy policy = oldRemovedPolicy.next(); 
+						if(newUpdatedPolicy.getPolicyName().equals(policy.getPolicyName())) {
+							if(newUpdatedPolicy.getVersionNo().equals(policy.getVersionNo())) {
+								oldRemovedPolicy.remove();
+							}
+						}
+					}
+					// If it was previously updated need to Overwrite it to the record.
+					Iterator<LoadedPolicy> oldUpdatedPolicy = updatedPolicies.iterator();
+					while(oldUpdatedPolicy.hasNext()){
+						LoadedPolicy policy = oldUpdatedPolicy.next();
+						if(newUpdatedPolicy.getPolicyName().equals(policy.getPolicyName())) {
+							if(newUpdatedPolicy.getVersionNo().equals(policy.getVersionNo())) {
+								oldUpdatedPolicy.remove();
+							}
+						}
+					}
+					updatedPolicies.add(newUpdatedPolicy);
+				}
+			}
+			// Checking with New Removed policies.
+			if(notification.getRemovedPolicies()!= null && !notification.getRemovedPolicies().isEmpty()) {
+				for( RemovedPolicy newRemovedPolicy : notification.getRemovedPolicies()) {
+					// If it was removed earlier then we need to remove from our record
+					Iterator<RemovedPolicy> oldRemovedPolicy = removedPolicies.iterator();
+					while(oldRemovedPolicy.hasNext()){
+						RemovedPolicy policy = oldRemovedPolicy.next(); 
+						if(newRemovedPolicy.getPolicyName().equals(policy.getPolicyName())) {
+							if(newRemovedPolicy.getVersionNo().equals(policy.getVersionNo())) {
+								oldRemovedPolicy.remove();
+							}
+						}
+					}
+					// If it was previously updated need to Overwrite it to the record.
+					Iterator<LoadedPolicy> oldUpdatedPolicy = updatedPolicies.iterator();
+					while(oldUpdatedPolicy.hasNext()){
+						LoadedPolicy policy = oldUpdatedPolicy.next();
+						if(newRemovedPolicy.getPolicyName().equals(policy.getPolicyName())) {
+							if(newRemovedPolicy.getVersionNo().equals(policy.getVersionNo())) {
+								oldUpdatedPolicy.remove();
+							}
+						}
+					}
+					removedPolicies.add(newRemovedPolicy);
+				}
+			}
+			record.setRemovedPolicies(removedPolicies);
+			record.setLoadedPolicies(updatedPolicies);
+		}
+		// Send the Result to the caller. 
+		ObjectWriter om = new ObjectMapper().writer();
+		String json = null;
+		try {
+			json = om.writeValueAsString(record);
+		} catch (JsonProcessingException e) {
+			logger.error(XACMLErrorConstants.ERROR_SCHEMA_INVALID + e.getMessage());
+			// TODO:EELF Cleanup - Remove logger
+			PolicyLogger.error(MessageCodes.ERROR_SCHEMA_INVALID, e, "");
+		}
+		logger.info(json);
+		return json;
+	}
+
+}